voicetoinstrument.com is an AI audio conversion platform that transforms uploaded voice recordings, hummed melodies, or vocal tracks into realistic instrument sounds. It supports conversion to more than 100 instruments including piano, guitar, violin, saxophone, drums, and flute, and offers a free online converter alongside additional AI audio tools such as stem splitters and vocal removers.
Ondoku is text-to-speech software that reads text up to 5,000 characters free of charge and offers paid plans converting up to 1 million characters a month. Generated audio can be saved as MP3 files and used commercially. It runs in a browser on PC or smartphone without installation.
Works with speech, voice, music or other audio using machine-learning models.
FreeTTS is a browser-based audio workspace for creating speech, transcribing recordings, isolating vocals, enhancing voices, and editing audio. It offers Device TTS, AI Local TTS, and AI Cloud voices with free monthly characters. Browser tools handle audio cutting, joining, compression, and conversion, and a free plan includes 5,000 characters per month.
AceTagGen is a free prompt system for SUNO AI. It offers a structured 12-step Tag Builder, a library of verified tags, a prompt scorer, and a research blog with articles and guides. No signup is required.
AssemblyAI provides voice AI infrastructure, including pre-recorded, realtime and synchronous speech-to-text APIs, a voice agent API, speech understanding features and guardrails. Features such as speaker diarization, summarization, sentiment analysis and PII redaction run on the same transcription request.
Voctro Labs is a Barcelona-based company founded in 2011 that develops AI-based voice, music and audio technologies for creative companies and individuals. Its products include Voiceful, a toolkit for speech and singing voice experiences with a cloud-based API and SDK libraries, and Virtual Singers for Yamaha's VOCALOID software. Services include personalized voices and customized algorithms.
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Ondoku is text-to-speech software that reads text up to 5,000 characters free of charge and offers paid plans converting up to 1 million characters a month. Generated audio can be saved as MP3 files and used commercially. It runs in a browser on PC or smartphone without installation.
Works with speech, voice, music or other audio using machine-learning models.
FreeTTS is a browser-based audio workspace for creating speech, transcribing recordings, isolating vocals, enhancing voices, and editing audio. It offers Device TTS, AI Local TTS, and AI Cloud voices with free monthly characters. Browser tools handle audio cutting, joining, compression, and conversion, and a free plan includes 5,000 characters per month.
AceTagGen is a free prompt system for SUNO AI. It offers a structured 12-step Tag Builder, a library of verified tags, a prompt scorer, and a research blog with articles and guides. No signup is required.
AssemblyAI provides voice AI infrastructure, including pre-recorded, realtime and synchronous speech-to-text APIs, a voice agent API, speech understanding features and guardrails. Features such as speaker diarization, summarization, sentiment analysis and PII redaction run on the same transcription request.
Voctro Labs is a Barcelona-based company founded in 2011 that develops AI-based voice, music and audio technologies for creative companies and individuals. Its products include Voiceful, a toolkit for speech and singing voice experiences with a cloud-based API and SDK libraries, and Virtual Singers for Yamaha's VOCALOID software. Services include personalized voices and customized algorithms.
